Having just found the group, I'd be interested in seeing what people would recommend for books on the subject.

I think a few of the more obvious choices at this point would be -

Wikinomics ~ Don Tapscott

Everything is Miscellaneous ~ David Weinberger

Republic.com 2.0 ~ Cass Sunstein

Here Comes Everybody ~ Clay Shirky

The Long Tail: Why the Future of Business Is Selling Less of More ~ Chris Anderson

The Cult of the Amateur: How Today's Internet is Killing our Culture ~ Andrew Keen

What else?

Hey Spalding, you see that Shirky's "Cognitive Surplus" is getting some play over @ the Edge?